When running the FreePBX Sangoma OS distro inside a VirtualBox virtual machine, installing VirtualBox Guest Additions fails with "Kernel headers not found for target kernel" even after installing kernel-devel and kernel-headers via yum.
Root Cause: In FreePBX Sangoma OS installations, the build directory symlink
/lib/modules/$(uname -r)/build is missing from the active kernel directory.
The 1-Line Fix
Create the missing build symlink pointing to the kernel source directory:
# 1. Install development packages
yum install dkms gcc kernel-devel kernel-headers -y
# 2. Fix the missing module build symlink
ln -s /usr/src/kernels/$(uname -r) /lib/modules/$(uname -r)/build
# 3. Mount and build Guest Additions
mount /dev/cdrom /media/cdrom
cd /media/cdrom
./VBoxLinuxAdditions.runThe kernel module compilation will complete cleanly, enabling dynamic display resizing and shared folders.
oh thank god...fought this for an hour!
ReplyDeletemy hero!
ReplyDeleteHad the same issue with FreePBX on VirtualBox kernel headers were there but Guest Additions still failed. Just created the missing symlink and re-ran the installer worked like a charm, even with proton ge setups!
ReplyDelete